A76? I've live in the home of Beech all my life and am unfamiliar with that
model, and google provides no info.
Perhaps a foreign designation? As far as I can remember, no Beech model was
appropriate for the A designation until the new AT-6, the Super Tucano
killer.
-----Original Message-----
From: Jim Nichols
Sent: Wednesday, May 09, 2012 1:25 PM
To: Olympus Camera Discussion
Subject: Re: [OM] IMG: Piaggio Propulsion Details
I'm not familiar with that model by Beech. The two airplanes that best
demonstate a rattling sound when passing closeby are the B-25 Mitchell, of
Jimmy Doolittle fame, and the T-28 trainer, both powered by radial engines.
Jim Nichols
Tullahoma, TN USA
----- Original Message -----
From: "Ken Norton" <ken@xxxxxxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Wednesday, May 09, 2012 1:13 PM
Subject: Re: [OM] IMG: Piaggio Propulsion Details
>> Very fitting commentary. In my observation, I only heard it on the
>> ground,
>> during rollout, braking and taxiing. Probably at its worst.
>
> One advantage of running more blades is that they can be shorter.
> Shorter blades mean greater RPM before the tips go supersonic.
>
> Something else I noticed are the strakes on the fusulage. The shape
> and position mean that the sound (shockwave) from the propeller blades
> will reflect back outward. So, during ground ops, the sound to the
> side will be greatly increased as the listener is getting both the
> direct sound and the reflected sound.
>
> This reminds me. A couple days ago, there was a Beachcraft A76 (I
> think) taking off from the local airport. As he was climbing out, he
> passed directly past us. His prop was giving that loud ratty sound
> that I always recalled those particular airplanes to make.
>
> AG
> --
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